Leather-staking machine



(No Model.)

G. W. BAKER.

3 Sheets-Sheet I.

LEATHER STAKING MACHINE.

Patented Nov. 1, 1887.

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Attorney (No Model.) 3 sheets-sheet G. W. BAKER.

LEATHER STAKING MACHINE.

No. 372,507. Patented Nov. 1, 1887.

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3 Sheets-Sheet 3.

(No ModeL) G. W. BAKER.

LEATHER STAKING MACHINE. No. 372,507. Patented Nov. 1, 1887..

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Unirse Srarss GEORGE \V. BAKER, OF V LEATH ER-STAK ILM INGTON, DELAXVARE.

ING MACHINE.

SPECIFICATION fer-ming part of Letters Patent No. 372,507, dated November 1, 1887,

Application filed August 13, 1887.

To @ZZ whom zz may concern.-

Beitknown that LG neuen W. BAKER, a citi- Zen of the United States, anda resident of Wilmington, in the couutyofNew Castle and State ofDelaware, have invented certain new and useful Improvements in Machines for Staking and Perehiug Leather; and Ido declare the following tobc a full,elear, and exact description ofthe invention, such as will enable others skilled in the art to which it ap pertains to niake and use the same, reference being had to the accompanying` drawings, and to letters or figures ot' reference marked thereon,which form a part of this spcciiication.

Figure l of the drawings is a side elevation of my improved staking-machine. Fig. 2 isa side elevation of my improved staking-machine. Fig. 3 isa plan view. Fig. t is a detail Side view ofbeltF. Fig. 5 is a top view ofsame.

Fig. 6 is a transverse section of slide G, linex x, Fig. 3. Fig. Tis a section of knifeandjaws,

line yy, Fig. S. Fig. 8 is a detail front view ofjaws and knife.

rlhis invention has relation to machines for staking and pcrching leather; and it consists in the novel construction and combination of parts, all as hereinafter set fort-h.

In theaccompanying drawings, the letter A designates the frame of the machine, which is preferably made of iron, and is formed with uprights or bearing portions to support the mechanism.

B B are upright. guides in front and rear of the frame, and C C are the movable supports or pedestals of the table D, said supports or pcdestals having a vertical reciprocating motion between the guides when operated, as hereinafter set forth.

E is a shaft extending along the bed plate or sill of the frame in suitable bearings, and having upon it the camsa a,which engage the lower ends of the supports C. A pedal, b,connected to the end ofthe shaft,enaloles the operator to turn the shaft and raise the entire The tableD is preferably inclined downward from front to rear, and is provided with the lateral wings or supports C C, which are arranged at the sides of the central way,rl, which extends longitudinally, and is provided at its endswith the rollers c c, over which passes the belt or apron F, which carries the slide G,

Serial No. 216,578. (No model.)

which moves on bearingsff in the sides ofthe central way. The slide is provided at its front end with a slot, g, or bearing, in which is seated the piece 7L, which has a transverse slot, k. rlhis piece or block h is removable, and several such blocks having slots of different width are .provided in connection with the machine to be used with staking-tools of different thickness. The rear end of theslide has a lug, l, to which is connected the rear end of the adjustable pitman H, the front end of which is connected to the staking-tool carrier K. In order that the pitman may be readily and exactly adjusted to the stroke, it is lnade in two sections having rightaud left threaded ends, which are connected by a union-nut, m, by turning which the pitinan may be length` cned or shortened, according to requirement. |The belt or apron F fills the interval between the edges of the central way and 'supports the skin when the slide has moved back. Pivotcd to the front portion ofthe table is the clamp L, the upper end or jaw, J, of which closes toward the edge I of the table to hold the skin ofleather at the point desired. Aspring, a, serves to automatically open the clamp when the hook or catch isdisengaged. rlhis hook or catch consists, preferably, of a long arm, N, which is pivoted to a crank-arm, p, on a transverse shaft, q, which is seated in bearings of the rear portion of the main frame. To the shaft q is connected a crank-arm, lr, which is operated by a cain on-thc main driving-shaft S, which engages the head ot' the pitman t, which is connected to said crank-arm i'. At a certain time in each revolution ot' the main shaft the clamp is opened and closed, sufficient time being given between the opening and closing of the clamp to allow the operator to shift the skin, so that it will ybe held at a fresh portion.

The catch rod or arm N is usually made adjustable, and preferably consists of two scetions having right and left threaded ends, which are connected by a union nut or coupling, T, by turning which the rod can be lengthcned or shortened to regulate the pressure of the clamping-jaw. The catch-rod is provided with a second catch, o', in front of the first catch, e, so that the clamp can be quickly and readily opened widely, to enable the operator to insert the skin of leather between the jaws when commencing work thereon.

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vExtending forward above the table is an overhanging portion, V,4 of the main frame, which is provided with guides ac, which are in direction normal to the plane of the table. below. Between these guides is the reciprocating frame Z, which carries the front and rear cams, B B', which are engaged by pins of the crank-arms D of the shafts C', which are operated from a crank-arm, E', on the main driving-shaft by means of pitmen F and G. The cams B are preferably slots circularly curved at their rear ends to correspond with the radial sweep of the crank-arms D', so that when the pins of said crank-arms are moving in the curved portion of the cam slots the reciprocating frame Z will be stationary, and during this time the stroke of the staking-tool is made.

In the frame Z is provided the longitudinal guideway G2, in which travels the staking-tool carrier K, to which is secured the staking-tool W, suitable jaws, w, being provided to hold the staking-tool tirmly. Several stakingtoolsp of different thickness are provided with each machine, thin leather requiring a staking-tool with a sharper edge than is required in oper'- atingupon th-ick leather.

rIhe stakingetool carrier is reciprocated by means of the main crank V on the drivingshaft, motion being communicated to the staking-tool carrier by the pitman P.

J' is a stay or brace rod pivotally connected at the forward end to the reciprocating frame Z, and having its rear end pivotally connected to the upper outer end of the guide c'. The stay-rod J,'being so connected, acts as a brace to the frame Z in its upward and downward movement.

The operation is as follows: The skin of leather being laid upon the table is held at one point by the clamp, which closes automatically thereon. At the same time the slotted slide and the staking-tool are moved forward, the former under the skin and the latter above it. At the close of the forward movement the reciprocating frame Z descends, bringing down the staking-tool, which engages the leather and presses it into the transverse slot at the s ame time that both staking-tool and slotted slide move to the rear, so that the leather is staked and perched throughout the extent of the stroke of the staking-tool. The pressure of the staking tool upon the leather as it presses it into the transverse staking-slot is regulated by the operator by means of the pedal, which enables him to lift the table to obtain the exact pressure required. Upon the return of the staking-tool and slotted slide the clamp opens automatically and remains open long enough to enable the operator to shift the skin of leather to obtain a fresh purchase for the next stroke.

3. The combinatiomwith the reciprocating y staki ng-tool and the reciprocating slotted slide, of the automatically opening and closing clamp pivoted to the front port-ion of the table, substantially as specified.

4.l The combination, with the reciprocating staking-tool-and the reciprocating slotted slide and the movable table carrying said slide, of the cam-shaft and its pedal,substantially as specified.

5. The combination, with the reciprocating staking-tool, of the adjustable table having a central way, the bearing rollers thereof, the slotted slide, and the belt or apron connected to said slotted slide, substantially as specified.

6. In a leather staking machine, the combination, with the table and the clamp pivoted thereto, of the catch-rod connected to a crankshaft and operated bya cam on the lmain drivingshaft, substantially as specified.

7. In a leather-staking machine, the combination, with the reciprocating slide and its belt, the reciprocating staking-tool carrier,and mechanism to operate the latter, of the adjustable pitman connecting the slide to the staking-tool carrier, substantially as specified.

8. A leather staking and perching machine having an inclined table and a reciprocating slide connected thereto, a reciprocating staking-tool-carrying frame moving in slides nor- IOO mal to the plane of the table, a reciprocating staking-tool-carrier moving in a way of said frame, a pitman connecting the staking-tool carrier and slide, and cam mechanism to regulate the rise, fall, and pause of the reciprocating frame, substantially as specitied.

9. A machine f or staking leather, having a reciprocating slide and a flexible supportingapron connected thereto, in combination with a staking-tool, substantially as specified.

In testimony whereof I aftix my signature in presence of two witnesses.

GEORGE W. BAKER.

Vitnesses:

PHILIP C. Masa, M. P. CALLAN.

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